CN201707407U - Electric energy quality online monitoring device - Google Patents
Electric energy quality online monitoring device Download PDFInfo
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- CN201707407U CN201707407U CN2010201903794U CN201020190379U CN201707407U CN 201707407 U CN201707407 U CN 201707407U CN 2010201903794 U CN2010201903794 U CN 2010201903794U CN 201020190379 U CN201020190379 U CN 201020190379U CN 201707407 U CN201707407 U CN 201707407U
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Abstract
Description
Technical field:
The utility model belongs to online electric energy quality monitoring and analytical equipment field, is specifically related to a kind of electric energy quality on-line monitoring device.
Background technology
Widespread use and development along with Power Electronic Technique, as static converter, industry ac-dc conversion device, electric arc furnaces, heavy (merchant) mill, electric locomotive etc., nonlinear load in the electric system, impact, undulatory property load get more and more, cause that power network current, voltage waveform distort, produce a large amount of higher hamonic waves, cause a series of power quality problems such as voltage fluctuation, flickering and three-phase imbalance.Electric power netting safe running has been arrived in the power quality problem serious harm, becomes " public hazards " of electrical network.On the other hand, airport, bank, sophisticated manufacturing, computer network and serve industry such as Surveillance center present the trend that increases day by day to the environmental requirement of electrical network " clean cleaning ".Therefore, no matter from operation of power networks need consider, still from the user need consider, strengthen the monitoring of the quality of power supply all is very important.
The research of domestic quality of power supply on-line monitoring and analytic system began progressively to begin after 2006, and equipment mainly is divided into two types in mancarried device and online device, and wherein mancarried device is by irregularly testing the point of being paid close attention to, and demand is less.Online electric energy quality monitoring of the main demand in market and analytic product.
At present, online electric energy quality monitoring and analytical equipment mainly are divided into following two kinds of designs:
1) class is based on transformer station's electric energy quality on-line monitoring device of industrial computer structure, this device is owing to adopt the core processing part of industrial computer as system, there is the mechanical rotation part, the long-time running actual effect is unsatisfactory, failure rate is higher, because in the defective of design aspect, it can not really realize the synchronous monitoring in many loops of transformer station.
(2) the another kind of Embedded transformer station single loop electric energy quality on-line monitoring device that is based on, for transformer station, one need be monitored inlet wire and many loops of outlet, and single loop obviously can't meet the demands, and this adopts multiple devices to monitor with regard to needs.The stationary problem of multiple devices also is to need to solve simultaneously.Owing to adopt flash as memory device, limited by channel capacity, under the situation that network communication is interrupted, can only preserve the historical data in a week.
The utility model content
The purpose of this utility model is the defective that solution online electric energy quality monitoring of prior art and analytical equipment can't satisfy many loop synchronous detection, and a kind of electric energy quality on-line monitoring device that can realize the multiloop synchronous detection is provided.
The utility model is achieved by the following technical solution:
It is a kind of electric energy quality on-line monitoring device, it is characterized in that comprising parallel DSP, ARM9 chip and fpga chip, between dsp chip and the ARM9 chip, be equipped with the high capacity dual port RAM between ARM9 chip and the fpga chip, the data input pin of described fpga chip is connected with the data output end of A/D sampling module, the data input pin of A/D sampling module is connected with the data output end of mutual inductor, the data output end of fpga chip is connected with the data input pin of first dual port RAM, the data output end of first dual port RAM is connected with the data input pin of dsp chip, the data output end of dsp chip is connected with the data input pin of second dual port RAM, the data-out port of second dual port RAM is connected with the data input pin of ARM9 chip, described dsp chip is connected with the DSP memory module, the ARM9 chip respectively with the ARM9 memory module, communication module, display module, load module connects.
The signal output part of FPGA is connected with the signal input part of second dual port RAM respectively at DSP.
In the utility model:
The DSP memory module is flash memory module and the wherein any one or two kinds of combination of SRAM memory module.
The ARM9 memory module is wherein any one or two kinds of combination of flash memory module, SD card memory module, SRAM memory module or three kinds combination.
Communication module is wherein any one or two kinds of combination of ethernet module, RS485 module, RS232 module or three kinds combination.
Display module is the TFTLCD display screen.
Load module is a keyboard.
The utility model adopts following gordian technique to ensure performance:
A, 32 Floating-point DSP of employing TI company are core, have powerful data-handling capacity;
B, data storage and Communication processor adopt ARM9, embed (SuSE) Linux OS as software platform, the storage space of 16G (store the time limit＞1 year), satisfy the equipment for monitoring power quality requirements of data storage, the integrated embedded database of terminal, the power down of assurance data is not lost, and improves data I/O efficiency and ability simultaneously; Terminal has outstanding man-machine interface, and is simple to operation;
C, data acquisition channel A/D design, can maximum synchronous acquisition 24 passages, the electric current and voltage passage can be matched according to user's request, the complete synchronized sampling of all passages, precision is higher, speed is faster, and any one road A/D damages the normal collection that does not influence other channel data;
D, employing field programmable gate function CPLD have reduced a large amount of peripheral circuits, have improved the reliability of system, have strengthened the dirigibility of system simultaneously;
E, 5.6 cun TFTLCD show the waveform of display voltage current waveform, and logout in real time;
Jumbo twoport ram is adopted in communication on f, the core processing plate between the different CPU, has guaranteed the real-time of exchanges data, and fluency;
G, adopt the external GPS synchronous sampling technique, guaranteed same transformer station in or the synchronized sampling of the interior monitoring device of different substation;
H, disposed 100M Dual-Ethernet mouth, can carry out data interaction with different distant place administrative centers, terminal device can be used as client, also can be used as server, supports real-time and indirect communication; Terminal support remote interface commonly used comprises: PQDIF, TCP, FTP, WEBService, support program remote upgrade simultaneously.
I, adopted the SMT technology, protective relaying device commonly used " back of the body inserts formula " structure;
The utlity model has working stability reliable, can realize the multiloop synchronous detection, to detect data accurate, the advantage that data storage capacity is big.The utility model employing DSP+ARM9+FPGA three CPU parallel organizations adopt the high capacity dual port RAM, and have the PQDIF data layout directly to export, and the relevant report of both sides 100M Ethernet data transmission, have guaranteed the real-time and the fluency of exchanges data.Through experiment, hardware reliability of the present utility model and Electromagnetic Compatibility reach leading domestic level, especially anti-fast transient disturbs the level that has reached IEC61000-4-4:1995 standard I V level, has surpassed the requirement of GB to the EMC of equipment for monitoring power quality.
Description of drawings
Accompanying drawing is a principle schematic of the present utility model;
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further elaborated.
As shown in drawings: the data input pin of fpga chip is connected with the data output end of A/D sampling module, the data input pin of A/D sampling module is connected with the data output end of mutual inductor, the data output end of fpga chip is connected with the data input pin of first dual port RAM, the signal output part of FPGA is connected with the signal input part of second dual port RAM respectively at DSP, the data output end of first dual port RAM is connected with the data input pin of dsp chip, the data output end of dsp chip is connected with the data input pin of second dual port RAM, the data-out port of second dual port RAM is connected with the data input pin of ARM9 chip, described dsp chip is connected with the DSP memory module, the ARM9 chip respectively with the ARM9 memory module, communication module, display module, load module connects.
The DSP memory module is flash memory module and the wherein any one or two kinds of combination of SRAM memory module.
The ARM9 memory module is wherein any one or two kinds of combination of flash memory module, SD card memory module, SRAM memory module or three kinds combination.
Communication module is wherein any one or two kinds of combination of ethernet module, RS485 module, RS232 module or three kinds combination.
Display module is the TFTLCD display screen.
Load module is a keyboard.
The utlity model has following function
A, voltage deviation monitoring: product calculates three-phase phase voltage or line voltage in real time, and the master record cycle is 3s, and the instantaneous value of getting 3s carries out effective value and calculates, and its time label is the moment that finishes this 3 second.The time interval of recorded and stored can be set to the integral multiple in 3 seconds, and maximal value got in record.The out-of-limit rate of rate of qualified voltage, voltage, voltage deviation maximal value, minimum value, mean value, the big value of 95% probability in product can be added up at certain time intervals.Product can be provided with the voltage deviation threshold value, and whether detect voltage deviation in real time out-of-limit.When the generation voltage deviation is out-of-limit, can generates the dependent event daily record automatically and also write down relevant event data.
B, frequency departure monitoring: product has functions such as record, statistics, logout.
C, voltage, the monitoring of current imbalance degree: product synthesizes positive sequence, negative sequence voltage and electric current according to the three-phase voltage, the three-phase current that calculate by software, thus the degree of unbalancedness of calculating voltage, electric current.Product has the statistics of degree of unbalancedness and out-of-limit event recording function.
D, harmonic monitoring: product carries out FFT to voltage, current sampling data and decomposes, and can obtain the each harmonic component.Owing to taked the automatic frequency tracking compensation, eliminated frequency " leakage ", prevented the measuring error that causes under the fundamental frequency offrating situation.In real time calculated amount comprises: total percent harmonic distortion of voltage, electric current, 2～50 subharmonic containing ratios, amplitude, the phase place that require according to GB A level; Meritorious, the reactive power of each harmonic etc.Master record cycle and recorded and stored cycle are the same.Product can show on panel LCD: the real-time waveform of electric current, voltage, the harmonic wave rod figure of voltage, electric current, the real-time waveform of each harmonic electric current, voltage.Has harmonic wave Threshold Crossing Alert function simultaneously.
E, a harmonic monitoring: for the waveform that contains a harmonic wave since between the frequency of harmonic component be the branch several times of first-harmonic and unpredictable, therefore often be difficult to determine wave period.Product is by the general requirement of National Standard power quality monitoring device " regulation, a master record cycle was 3 seconds, one is 1/8 work frequency for the resolution of a harmonic wave, also can be set to other frequencies according to the needs of concrete test; Between the monitoring function of harmonic wave can be set to as required start or stop, on product is realized, harmonic wave between 20 amplitude maximums of product storage.
F, voltage fluctuation and flickering monitoring: voltage fluctuation can cause many electrical equipment cisco unity malfunctions usually, as influence television picture quality, make the motor speed pulsation, make electronic device work not normal, make incandescent light take place to glimmer or the like.Because one consumer far below incandescent lamp, is therefore selected the subjective visual sense of people to the fluctuation of incandescent lamp illumination to the susceptibility of voltage fluctuation, i.e. " flickering " is as the evaluation index of weighing the voltage fluctuation extent of injury.For the voltage fluctuation of random variation such as electric arc furnaces load, not only to check its peak to peak, also to observe the special part of statistics of voltage fluctuation in the long enough time.By the GB requirement, a record cycle of flickering in short-term is 10 minutes, and flickering is 2 hours when long.The monitoring of voltage fluctuation and flickering can start or stop as required.
G, transient state disturbance monitoring: the transient state disturbance comprises transient overvoltage, voltage dip, transient overvoltage and short time voltage disruption.Product can be achieved as follows function: real-time monitoring voltage instantaneous value.When disturbance takes place, judge disturbance through specific detection algorithm, and provide the information such as phase change, disturbance duration of amplitude, the disturbance of moment that disturbance takes place, disturbance; After judging disturbance, start waveform capture function (promptly recording wave energy) immediately, note disturbance and finish voltage waveform in a period of time of back to disturbance for the previous period.
H, harmonic source detect: cause the sine-shaped distortion of system voltage, produce the equipment and the load of higher hamonic wave, be called harmonic source.All nonlinear equipment and load all are harmonic sources.The main target that harmonic source detects is to determine that harmonic source is from user side or system side.
I, failure wave-recording: product has the failure wave-recording function, starts record ripple, recording voltage, current instantaneous value waveform or effective value waveform when power quality index is out-of-limit or when disturbance takes place.Can match special-purpose record wave analysis software, to recorder data analyze, show, storage etc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201903794U CN201707407U (en) | 2010-05-14 | 2010-05-14 | Electric energy quality online monitoring device |
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| CN2010201903794U CN201707407U (en) | 2010-05-14 | 2010-05-14 | Electric energy quality online monitoring device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928716A (en) * | 2012-11-06 | 2013-02-13 | 江苏正佰电气股份有限公司 | Intelligent power quality monitoring system |
| CN103134969A (en) * | 2011-11-28 | 2013-06-05 | 西门子（中国）有限公司 | Power factor corrector and phase voltage estimation method |
| CN103135003A (en) * | 2011-11-24 | 2013-06-05 | 上海华建电力设备股份有限公司 | Intelligent integrated monitoring device |
| CN103176066A (en) * | 2011-12-21 | 2013-06-26 | 上海利思电气有限公司 | Digitization power quality monitoring device |
| CN103323686A (en) * | 2012-03-19 | 2013-09-25 | 上海利思电气有限公司 | Smart power grid power quality analyzer |
| CN103364664A (en) * | 2013-07-19 | 2013-10-23 | 国家电网公司 | Electric energy integrated data processing method |
| CN103901293A (en) * | 2013-12-05 | 2014-07-02 | 国家电网公司 | Power quality monitoring device based on intelligent substation |
| CN104156412A (en) * | 2014-07-30 | 2014-11-19 | 华北电力大学 | Complex event processing based power quality disturbance event classification monitoring method |
| CN105548777A (en) * | 2016-01-27 | 2016-05-04 | 成都府河电力自动化成套设备有限责任公司 | Fault recording device on the basis of double-CPY parallel wave recording storage |
| CN105652076A (en) * | 2014-11-26 | 2016-06-08 | 国家电网公司 | Measurement synchronization method and system for power electronic equipment |
| CN108802533A (en) * | 2018-06-20 | 2018-11-13 | 保定市斯麦尔电气有限公司 | A kind of Electric Power Quality On-line Monitor System |
-
2010
- 2010-05-14 CN CN2010201903794U patent/CN201707407U/en not_active IP Right Cessation
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135003A (en) * | 2011-11-24 | 2013-06-05 | 上海华建电力设备股份有限公司 | Intelligent integrated monitoring device |
| CN103134969B (en) * | 2011-11-28 | 2016-01-20 | 西门子（中国）有限公司 | A kind of power factor corrector and phase voltage method of estimation |
| CN103134969A (en) * | 2011-11-28 | 2013-06-05 | 西门子（中国）有限公司 | Power factor corrector and phase voltage estimation method |
| CN103176066A (en) * | 2011-12-21 | 2013-06-26 | 上海利思电气有限公司 | Digitization power quality monitoring device |
| CN103176066B (en) * | 2011-12-21 | 2015-11-18 | 利思电气（上海）有限公司 | Digitalized electric energy quality monitoring device |
| CN103323686A (en) * | 2012-03-19 | 2013-09-25 | 上海利思电气有限公司 | Smart power grid power quality analyzer |
| CN103323686B (en) * | 2012-03-19 | 2016-03-09 | 利思电气（上海）有限公司 | A kind of intelligent grid power quality analyzer |
| CN102928716A (en) * | 2012-11-06 | 2013-02-13 | 江苏正佰电气股份有限公司 | Intelligent power quality monitoring system |
| CN103364664B (en) * | 2013-07-19 | 2015-11-18 | 国家电网公司 | A kind of electric energy integrated data processing method |
| CN103364664A (en) * | 2013-07-19 | 2013-10-23 | 国家电网公司 | Electric energy integrated data processing method |
| CN103901293A (en) * | 2013-12-05 | 2014-07-02 | 国家电网公司 | Power quality monitoring device based on intelligent substation |
| CN104156412A (en) * | 2014-07-30 | 2014-11-19 | 华北电力大学 | Complex event processing based power quality disturbance event classification monitoring method |
| CN104156412B (en) * | 2014-07-30 | 2017-10-10 | 华北电力大学 | A kind of electrical energy power quality disturbance event category monitoring method based on Complex event processing |
| CN105652076A (en) * | 2014-11-26 | 2016-06-08 | 国家电网公司 | Measurement synchronization method and system for power electronic equipment |
| CN105548777A (en) * | 2016-01-27 | 2016-05-04 | 成都府河电力自动化成套设备有限责任公司 | Fault recording device on the basis of double-CPY parallel wave recording storage |
| CN105548777B (en) * | 2016-01-27 | 2018-07-03 | 成都府河电力自动化成套设备有限责任公司 | Fault wave recording device based on the parallel recording storage of dual processors |
| CN108802533A (en) * | 2018-06-20 | 2018-11-13 | 保定市斯麦尔电气有限公司 | A kind of Electric Power Quality On-line Monitor System |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG DEYOU ELECTRICS CO., LTD. Free format text: FORMER NAME: SHANDONG QILIN ELECTRIC POWER EQUIPMENT CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 255086 Qi Lin Industrial Zone, Zibo Development Zone, Shandong, China Patentee after: Shandong Deyou Electric Co., Ltd. Address before: Qi Lin Industrial Park 255086 Shandong province high tech Zone in Zibo City, Yumin Road Patentee before: Shandong Chilintec Electric Equipment Manufacture Co., Ltd. Address after: 255086 Qi Lin Industrial Zone, Zibo Development Zone, Shandong, China Patentee after: Shandong Deyou Electric Co., Ltd. Address before: Qi Lin Industrial Park 255086 Shandong province high tech Zone in Zibo City, Yumin Road Patentee before: Shandong Chilintec Electric Equipment Manufacture Co., Ltd. |
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 255086 Qi Lin Industrial Zone, Zibo Development Zone, Shandong, China Patentee after: SHANDONG DEYOU ELECTRIC CORP., LTD. Address before: 255086 Qi Lin Industrial Zone, Zibo Development Zone, Shandong, China Patentee before: Shandong Deyou Electric Co., Ltd. Address after: 255086 Qi Lin Industrial Zone, Zibo Development Zone, Shandong, China Patentee after: SHANDONG DEYOU ELECTRIC CORP., LTD. Address before: 255086 Qi Lin Industrial Zone, Zibo Development Zone, Shandong, China Patentee before: Shandong Deyou Electric Co., Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20110112 |